Transmission case



March 29, 1927.

v. E. SHAKEfiPEARE TRANSMISSION CA-SE Filed Sept. 5. 1926 I lNVEN-TOR Walenfihe .E'. Shakespeare WITNESSES BY ATTORNEYS Patented Mar. 29, 1927.

"UNITE D STATES PATENT OFF-ICE.

VALENTINE n. SHAKESPEARE, or wiisr NEW BRIGHroNINn-w YORK.

TRaNsM'IssIo'N CASE.

Application filed September 33,1928. Serial No. 133,427.

up wear from the exterior of thecase.

In my prior Patent No. 1.608.437 issued to me November 23, 1926, '1 disclosed a novel type of rapidly removable brake band for use primarily in connection with Ford cars. In accor 1lance with the present invention, 1 have so modified-the Ford transmission case, that brake bands of the general character disclosed in my co-pending application may be readily incorporated therein, removed therefrom, and adjusted without removing the transmission case cover. I

Other objects of the invention are to provide a transmission case of simple, practical construction, which will be rugged, durable and efficient in use, and which is well suited to the requirements of economical manufacture.

With the above noted and other objects in View, the invention consists in certain novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter set forth and pointed out in the claims. The invention may be more fully understood from the following description in connection with the accom panying drawings, Wherein.

Fig. 1 is a view partly in side elevat on and partly in section through a transmission case taken on approximately the line 11 of Fig. 2.

Fig. 2 is a vertical sectional View on the Staggered line 2-2 of Fig. 1.

Fig. 3 is a sectional plan view on the line 33 of Fig. 2.

Fig. 4 is an enlarged perspective View of one of the speed bands.

In the drawings I have shown a transmission case of more or less conventional eX- ternal appearance including a flanged lower section 10 and a flanged upper section 11 bolted together at 12 in the usual manner, and encircling the drive shaft 13 of the car, the latter carrying the drums 1 1 for coaction with the various speed bands 15. The speed bands are controlled through the pedal levers 16 which act in theusual man ner to effect advance of the band brackets 17 toward each other. I

Instead of the usual transmission case cover I have modified the design ofthe-u'pp'er casting 11 to accommodate a coi'isiderably larger case cover 18 retained in place by the usual screws 19. The cover is formed with a depression 20 therein in the bottom of which is removably secureda plate .21

which effects the retention of the angular ends 22 of speed band anchorages -23.

' The speed bands and brake band are'of the same general character disclosed in my co-pending application above .re'ferred to, brackets 17 being connected to a channelled guide 'meniber 2 1 in which flexible steel strips 25 carrying the fabric liners 26 are slidable. The bands are entered into the channel through openings 27 in one of the brackets 17 and abut the turnedsover ends 28 of the channelled member 24. The opposite ends of the brackets carry the anchorages 23, the latter being of general L-shape including relatively long vertical arms formed with slots 29 and relatively short horizontal arms22 mentioned above.

When inserting the bands, the plate 21 is removed and the band ends passed downwardly through slots 30 in the depressed portion of the transmission case cover and through the openings 27 in the brackets 17. As the bands are forced inwardly, they will follow the channelled guides 24 until the band end abuts the flange at 28 at which time the portion 22 of the anchorage 23 will seat in a pocket 31 in the depressed portion of the cover 18. Plate 21 is then applied to retain the anchorages in position.

Brackets 17 are connected by the usual rods 82 and normally separated by the usual springs 33 to an extent limited by a nut 34 on the rod 32.

A feature of the invention is the provision of spring retracted socket wrenches 35 journalled in the wall of the transmission case, and provided with handles 36 for forcing them inwardly against the action of their springs 37. As these wrenches are forced inwardly they pass through the slots 29 in the anchorages 23 and engage the ends 3 1 to adjust the bands.

Thus, the construction above described not only permits replacement of speed bands Without removing the transmission case cover, but also permits adjustment of the bands from the exterior by the simple expedient of using the wrenches 35.

, Obviously, various changes and alterations might be made in the general form and arrangement of parts described without departing from the invention. Hence I do not wish to limit myself to the details set forth, but shall consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

I claim:

1. A transmission case including a pair of mating sections adapted to be bolted together about a power shaft, a cover carried by one section and having openings therein through which speed bands are adapted to be inserted in the case, said openings being arranged in a depressed portion of the cover.

2. A transmission case including a pair of mating sections adapted to be bolted together about a power shaft, a cover carried by one section and having openings therein through which speed bands are adapted to be inserted in the case, said openings being arranged in a depressed portion of the cover,

and a plate fitting in the depressed portion adapted to cover the openings and clamp the ends of speed band anchorages when the bands are in position.

3. The combination with a transmission case, power shaft and drums on the shaft within the case, of speed bands associated with the drums and anchored to the case cover, adjusting nuts associated with the speed bands, and socket wrenches mounted in the Wall of the case and engageable with the nuts, said wrenches being normally spring held in retracted position and movable through openings in the speed band anchorages to engage the nuts.

4. In a brake band or the like, a channelled member, brackets secured to the ends of the channelled member, one of said brackets having a slot therein, a brake band including a spring steel member adapted to be entered into the channel through the opening in the bracket and a lining secured to the spring steel member, said member having also se cured thereto at one end an approximately L-shaped anchorage adapted for engagement with the transmission case cover.

VALENTINE E. SHAKESPEARE. 

